libcruft-util/test/coord/simd.cpp

#include "coord/simd.hpp"
#include "tap.hpp"


int
main ()
{
    using util::coord::simd;

    util::TAP::logger tap;

    std::clog << "rounding mode is: " << [] () {
        switch (_MM_GET_ROUNDING_MODE ()) {
        case _MM_ROUND_NEAREST:     return "nearest";
        case _MM_ROUND_DOWN:        return "down";
        case _MM_ROUND_UP:          return "up";
        case _MM_ROUND_TOWARD_ZERO: return "toward_zero";
        }

        return "unknown";
    } () << '\n';

    {
        const simd a (1,2,3,4);
        const simd b (4,1,3,2);
        const float res = dot (a, b)[0];
        tap.expect_eq (res, 4+2+9+8, "trivial dot product");
    }

    {
        const simd a (1, 2, 3, 4);
        const simd b (0, 3, 3, 9);

        const auto lo = min (a, b);
        const auto hi = max (a, b);

        tap.expect_eq (lo, simd {0,2,3,4}, "vector minimum");
        tap.expect_eq (hi, simd {1,3,3,9}, "vector maximum");
    }

    {
        const simd val { -INFINITY, INFINITY, 0, -9 };
        tap.expect_eq (abs (val), simd {INFINITY,INFINITY,0,9}, "absolute value");
    }

    {
        const simd test { -1.25f,  1.25f, 0.f, 1.f };
        const auto lo = floor (test);
        const auto hi = ceil  (test);

        tap.expect_eq (lo, simd { -2, 1, 0, 1 }, "floor");
        tap.expect_eq (hi, simd { -1, 2, 0, 1 }, "ceil");
    };

    return tap.status ();
}